Hi Pssr,

Maybe your looping logic was wrong while trying to insert data into array 
from data reader.

This might be solved the logic problem.

int i
i=-1
SqlDataReader objDR12 =objCmd12.ExecuteReader(); 
while(objDR12.Read()){ 
i+=1
A1ID[i]=objDR12[0].ToString(); 
A1SL[i]=objDR12[1].ToString(); 
}